# ProjResidualInfoOp¶

class probnum.linalg.solvers.information_ops.ProjResidualInfoOp

Projected residual $$s_i \mapsto s_i^\top (A x_i-b)$$ of the linear system.

Obtain information about a linear system by projecting the current residual $$r_i = A x_i - b$$ onto a given action $$s_i$$ resulting in $$y_i = s_i^\top r_i$$.

Methods Summary

 __call__(solver_state) Projected residual $$s_i^\top (A x_i - b)$$ of the linear system.

Methods Documentation

__call__(solver_state)[source]

Projected residual $$s_i^\top (A x_i - b)$$ of the linear system.

Parameters

solver_state (ProbabilisticLinearSolverState) – Current state of the linear solver.

Return type

ndarray